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*Lecture: The Expression Problem*

### (Programming Paradigms and Formal Semantics)

(C) 2009-2011, Ralf Lämmel, Universität Koblenz-Landau
**Slides: [.pdf].**

- See also here: [.html]
- Systems as data variants + operations
- Extensibility in the data dimension
- Extensibility in the operation dimension
- Extensibility for the basic OOP tennet
- Extensibility for the basic FP tennet
- The Expression Problem
- Non-solutions